物理学报2012，Vol.61Issue(15)：236-243,8.
利用部分相干光和同心角偏差透镜列阵实现二维靶面均匀辐照
Two-dimensional performance of uniform irradiation with the use of a concentricity deviation lens array and partially coherent light
摘要
Abstract
A method of employing a lens array（LA） and partially coherent light（PCL） is presented for uniform irradiation on targets in inertial confinement fusion.Quasi-near field spots with a profile of sharp edge and flat top can be obtained with an LA,while the spatial coherence of the incidence beam is reduced by PCL.An appropriate concentricity deviation（CD） of LA results in the superposition of beamlets at the focus dislocated by a small amount each other and the CD and PCL reduce the fringe separations,thus the interference fringes become denser and the small-scale intensity non-uniformity of intensity distribution is suppressed.Based on the generalized diffraction integral theory,the intensity distribution of a Gaussian Schell Beam（GSB）,point focused by an LA and a spherical lens is investigated in detail by two-dimensional simulation.And irradiation uniformity effects are compared with coherent light and partially coherent light after the LA.Numerical results indicate that using an appropriate CD and moving the target slightly from the exact focal plane of the principal focusing,a well-irradiated laser spot and great energy efficiency can be obtained.关键词
部分相干光/高斯谢尔光束/透镜列阵/同心度偏差Key words
partially coherent light/Gaussian Schell beam(GSB)/lens array/concentricity deviation分类
数理科学引用本文复制引用
郑建洲,于清旭,关寿华,董斌,曹晓君,芦永军,吴云峰..利用部分相干光和同心角偏差透镜列阵实现二维靶面均匀辐照[J].物理学报,2012,61(15):236-243,8.基金项目
国家自然科学基金 （）
国家民委科研项目 （）
中央高校基本科研业务费专项资金 （）
大连民族学院博士启动基金资助的课题 （）
